<div dir="ltr"><div><span style="font-family:arial,sans-serif;font-size:13px">Hi Roman</span></div><div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><span style="font-family:arial,sans-serif;font-size:13px">> I think, Alejandro wanted to add clauses in different places (generic in one module, added method in another, for example)</span><span style="font-family:arial,sans-serif;font-size:13px">.</span><div>
<span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:13px">Quite possibly, or perhaps not! ;-)</span></div><div><span style="font-family:arial,sans-serif;font-size:13px"><br>
</span></div><div><span style="font-family:arial,sans-serif;font-size:13px">Alejandro gave an example of one declaration mechanism that he'd seen in CL. Hard to tell whether that's optimal for his context, or if that's what he's familiar with.</span></div>
<div><br></div><div>Dan</div><div><br></div><div class="gmail_extra"><div class="gmail_quote">On Thu, Apr 3, 2014 at 8:43 PM, Roman Klochkov <span dir="ltr"><<a href="mailto:kalimehtar@mail.ru" target="_blank">kalimehtar@mail.ru</a>></span> wrote:<br>
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<div><div><font face="courier new, monospace">Or even simplerš<br><br>(define (dup a)<br>š (cond</font></div><div><font face="courier new, monospace">š š [(string? a) (string-append a a)]</font></div><div><font face="courier new, monospace">š š [(integer? a) (list a a)])<br>
<br></font></div>:-)<br><br>I think, Alejandro wanted to add clauses in different places (generic in one module, added method in another, for example).<br><br><br>Thu, 3 Apr 2014 20:11:36 +1100 ÏÔ Daniel Prager <<a href="mailto:daniel.a.prager@gmail.com" target="_blank">daniel.a.prager@gmail.com</a>>:<br>
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<div><div dir="ltr"><div>Here's an out-of-the-box option, using Racket's <a href="http://docs.racket-lang.org/reference/match.html#%28form._%28%28lib._racket%2Fmatch..rkt%29._define%2Fmatch%29%29" target="_blank">pattern matching</a>šwithšthe (? predicate) form:</div>
<div><br></div><div><font face="courier new, monospace">(define/match (dup a)</font></div><div><font face="courier new, monospace">š [((? string?)) (string-append a a)]</font></div><div><font face="courier new, monospace">š [((? integer?)) (list a a)])</font></div>
<div><br></div><div>Dan</div><div><div dir="ltr"></div>
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<br>-- <br>Roman Klochkov<br></font></span></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div style="font-family:arial;font-size:small"><b>Daniel Prager</b></div><div style="font-family:arial;font-size:small">Agile/Lean Coaching, Software Development and Leadership<br>
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